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borcky in Helios64 - Armbian 23.08 Bookworm issues (solved)
To maintain changes between different kernel versions, you can use overlays. I did this by following some dts changes from @ebin-dev.
Add this line
user_overlays=rockchip-rk3399-op1-opp rockchip-rk3399-l2-cache
to /boot/armbianEnv.txt
Copy the dtbo files to /boot/overlay-user (mkdir -p /boot/overlay-user if the folder does not exist).
rockchip-rk3399-l2-cache.dtborockchip-rk3399-op1-opp.dtborockchip-rk3399-op1-opp.dtsrockchip-rk3399-l2-cache.dts